CVE-2023-24812Network attack vector

SQL injection via pre-normalization tag validation

Published Feb 22, 2023 · Updated Mar 10, 2025

SQL injection in Misskey before 13.3.3 allows remote authenticated users to alter database queries through the notes/search-by-tag API. The endpoint validated each raw tag with safeForSql, then normalized it and interpolated the normalized value into an SQL array condition, allowing normalization to produce content that had not been checked. A valid account and network access to the API are sufficient to expose or modify stored data or interrupt the service.

CVSS severity8.8
High
EPSS probability0.71%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

SQL injection in Misskey before 13.3.3 allows remote authenticated users to alter database queries through the notes/search-by-tag API. The endpoint validated each raw tag with safeForSql, then normalized it and interpolated the normalized value into an SQL array condition, allowing normalization to produce content that had not been checked. A valid account and network access to the API are sufficient to expose or modify stored data or interrupt the service.

The record

CVE
CVE-2023-24812
Published
Feb 22, 2023
Updated
Mar 10, 2025
Vendor
Misskey Project
Product
Misskey
Classifications
CWE-89, T1190
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Feb 22, 2023CVE publishedPublication date reported by the CVE source.
  2. Mar 10, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=< 13.3.3

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Misskey Project · Misskeyversion=< 13.3.3

Published CVSS scores

8.8GitHub, Inc.CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
9.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-89Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection')
T1190Exploit Public-Facing Application

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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